CN102834951A - Electrolyte pouring device and electrolyte pouring method - Google Patents
Electrolyte pouring device and electrolyte pouring method Download PDFInfo
- Publication number
- CN102834951A CN102834951A CN2011800174440A CN201180017444A CN102834951A CN 102834951 A CN102834951 A CN 102834951A CN 2011800174440 A CN2011800174440 A CN 2011800174440A CN 201180017444 A CN201180017444 A CN 201180017444A CN 102834951 A CN102834951 A CN 102834951A
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- China
- Prior art keywords
- electrolyte
- pressure
- reducing chamber
- battery case
- aeration tank
- Prior art date
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 155
- 238000000034 method Methods 0.000 title claims description 5
- 238000002347 injection Methods 0.000 claims description 68
- 239000007924 injection Substances 0.000 claims description 68
- 238000005273 aeration Methods 0.000 claims description 47
- 239000012530 fluid Substances 0.000 claims description 35
- 239000007789 gas Substances 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 25
- 238000007872 degassing Methods 0.000 claims description 20
- 239000007791 liquid phase Substances 0.000 claims description 3
- 239000012071 phase Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 11
- 238000012423 maintenance Methods 0.000 description 10
- 230000008676 import Effects 0.000 description 9
- 230000009183 running Effects 0.000 description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 8
- 229910052744 lithium Inorganic materials 0.000 description 8
- 230000000149 penetrating effect Effects 0.000 description 7
- 238000000926 separation method Methods 0.000 description 6
- 230000006837 decompression Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 235000012489 doughnuts Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004899 motility Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910013063 LiBF 4 Inorganic materials 0.000 description 1
- 229910013872 LiPF Inorganic materials 0.000 description 1
- 101150058243 Lipf gene Proteins 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- WEVMDWQCQITELQ-UHFFFAOYSA-N [O-]B(O)O.[Li+].F.F.F.F Chemical compound [O-]B(O)O.[Li+].F.F.F.F WEVMDWQCQITELQ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- SIXOAUAWLZKQKX-UHFFFAOYSA-N carbonic acid;prop-1-ene Chemical compound CC=C.OC(O)=O SIXOAUAWLZKQKX-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000003115 supporting electrolyte Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/618—Pressure control
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/673—Containers for storing liquids; Delivery conduits therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M14/00—Electrochemical current or voltage generators not provided for in groups H01M6/00 - H01M12/00; Manufacture thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/70—Arrangements for stirring or circulating the electrolyte
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
In order to more reliably reduce a time required to pour electrolyte into a battery case, a device for pouring the electrolyte into the battery case is provided with: a closed pressure-reducing chamber; an electrolyte pouring nozzle for pouring the electrolyte into the battery case disposed within the pressure reducing chamber; and an aerating tank for exposing the electrolyte, which is supplied to the electrolyte pouring nozzle, to the pressure within the pressure reducing chamber.
Description
Technical field
The present invention relates in battery case, inject electrolyte.
Background technology
The Japan patent Room discloses following electrolyte method for implanting in the JP09-102443A of distribution in 1997: in order to be injected into electrolyte in the battery case efficiently; Through in post-decompression environment, injecting the electrolyte in the battery case, promoted the infiltration of electrolyte in the gap of electrode group.
In post-decompression environment, the volume that is dissolved in the gas in the electrolyte expands sharp and is easy to produce bubble.Therefore, need carry out the injection of electrolyte lentamente, the bubble that produces with toilet can not make electrolyte overflow from battery case.
That is, in this prior art,, also may not shorten the fluid injection time even promoted the infiltration of electrolyte in the gap of electrode group.
Summary of the invention
Thereby, the objective of the invention is to shorten more reliably the required time that in battery case, injects electrolyte.
In order to reach above-mentioned purpose, electrolyte injection device of the present invention comprises: airtight pressure-reducing chamber; The fluid injection nozzle, it is configured in the pressure-reducing chamber, is used in battery case, injecting electrolyte.The electrolyte injection device also has aeration tank, and this aeration tank is used to make the electrolyte of wanting to be supplied to the fluid injection nozzle to be exposed under the pressure in the pressure-reducing chamber.
In the following record of specification, detailed content of the present invention and other characteristic, advantage are described, and represent with accompanying drawing.
Description of drawings
Fig. 1 is the summary construction diagram of electrolyte injection device of the present invention.
Fig. 2 is the exploded perspective view of lithium rechargeable battery.
Fig. 3 is the stereogram of battery main body.
Fig. 4 is the end view of lithium rechargeable battery.
Fig. 5 is the summary longitudinal section of the aeration tank that had of electrolyte injection device.
Fig. 6 is the summary longitudinal section of the degassing module that had of electrolyte injection device.
Fig. 7 is the partial, longitudinal cross-sectional of deaeration pipe of the degasification technique of explanation degassing module.
Fig. 8 A-Fig. 8 G is that the electrolyte that explanation utilizes the electrolyte injection device to carry out injects the sequential chart of action.
Fig. 9 is the summary construction diagram of the electrolyte injection device of expression other embodiment of the present invention.
Embodiment
With reference to Fig. 1, electrolyte injection device 1 is used in the battery case 12 of the lithium rechargeable battery 10 of maintenance instrument 3, injecting electrolyte 20 to being held.
With reference to Fig. 2, lithium rechargeable battery 10 comprises: battery main body 11, and it is provided with anodal curren-collecting part 103a and negative pole curren-collecting part 103b; Battery case 12, it is made up of laminated film, is used to accommodate battery main body 11; Positive pole ear (anode tab) 104a, it is electrically connected with anodal curren-collecting part 103a; Negative lug (cathode tab) 104b, it is electrically connected with negative pole curren-collecting part 103b.
With reference to Fig. 3, battery main body 11 is made up of the duplexer of cell, and the duplexer of this cell cascades positive plate and negative plate across barrier film.In following explanation, the end face on the stacked direction of cell of battery main body 11 is called range upon range of end face 11a, the outer peripheral face except range upon range of end face 11a of battery main body 11 is called range upon range of side 11b.
With reference to Fig. 2, positive plate is made up of the aluminium foil that has formed anode electrode through coating once more.Negative plate is made up of the Copper Foil that utilizes coating to form negative electrode.Being drawn out to from the lamination area of cell the outside, uncoated has the metallic membrane 43 of electrode material to be connected with the positive plate and the negative plate of each cell respectively.
Anodal curren-collecting part 103a carries out ultrasonic bonding through the metallic membrane 43 to the positive plate of all cells to constitute in the lump.Positive pole ear 104a also is connected to anodal curren-collecting part 103a by supersonic welding.
Negative pole curren-collecting part 103b carries out ultrasonic bonding through the metallic membrane 43 to the negative plate of all cells to constitute in the lump.Negative lug 104b also is connected to negative pole curren-collecting part 103b by supersonic welding.
Lithium rechargeable battery 10 by positive pole ear 104a and negative lug 104b from each cell discharge and to each cell electric power storage.
On the laminated film of a side, be pre-formed and be useful on the recess 12e that accommodates battery main body 11.Battery case 12 is through making two laminated films bonding and 4 limit thermal weldings are constituted under the state in the recess 12e in that battery main body 11 is housed in.Wherein, battery main body 11 is being housed under the state in the recess 12e, thermal welding 3 limits at first, the peristome from remaining 1 limit injects electrolyte in battery case 12 after, remaining 1 limit of thermal welding.
Also can replace on laminated film forming recess 12e, and with the bonding two flat laminated films of mode of parcel battery main body 11, battery main body 11 is accommodated in the space that utilizes the distortion because of laminated film to produce.
Other structure of battery case 12 is described with reference to Fig. 4.
At this, battery main body 11 is wrapped up in 1 laminated film doubling.Under this state, the base 12b of battery case 12 is the folded edges of laminated film.Both sides 12c, 12d about the figure in other 3 limits is last to be provided with the weld portion 12f that the laminated film thermal welding of joining is formed, thus the battery case 12 of shape pouch.The remaining 1 limit 12a of the upper end that is equivalent to figure of battery case 12 is an open state.
In battery case 12, inject electrolyte 20 and be from the peristome of limit 12a and in battery case 12, carry out.After injecting electrolyte 20, hot melt edge fit 12a, enclosed cell shell 12.
The material of battery case 12 is not limited to laminated film.Also can be made as battery case 12 metal.
With reference to Fig. 1, electrolyte 20 for example is made up of following electrolyte once more: with the phosphorus hexafluoride acid lithium (LiPF of 1 mol
6) or tetrafluoride lithium borate (LiBF
4) as supporting electrolyte, propene carbonate (propylene carbonate) that will mix with 50 to 50 mass ratio and ethylene carbonate (ethylene carbonate) are as mixed solvent.
Pressure-reducing chamber 2 has door 21.Door 21 purpose is set is, with the battery case that contains battery main body 11 12 in maintenance instrument 3 is input to pressure-reducing chamber 2, with the battery case after the injection of having accomplished electrolyte 12 with maintenance instrument 32 outputs from the pressure-reducing chamber.Describe for fear of misunderstanding, the rectangle of the Reference numeral 21 shown in the figure is not the container of clad battery shell 12, but is illustrated in the door that is provided with on the wall in pressure-reducing chamber 2 of behind of battery case 12.Be provided with the input path and the outgoing route of battery case 12 in the outside of door 21.It in pressure-reducing chamber 2 shutter door 21 under the atmospheric state.The door 21 of closed state is with being held in sealing state in the pressure-reducing chamber 2.
Under the state that battery case 12 is remained in maintenance instrument 3 to pressure-reducing chamber 2 input battery cases 12, fluid injection and in pressure-reducing chamber 2, export battery case 12 pressure-reducing chamber 2 in.Two faces of the range upon range of end face 11a of the clad battery main body 11 of 3 pairs of battery cases 12 of maintenance instrument carry out clamping, so that the peristome of limit 12a state up keeps battery case 12.
Reduced pressure line 5 comprises vacuum pump 5b that is driven by electro-motor 5c and the valve 5a that vacuum pump 5b and pressure-reducing chamber 2 are coupled together.Reduced pressure line 5 reduces pressure in to pressure-reducing chamber 2 through running vacuum pump 5b under the state of having opened valve 5a.
Atmosphere imports pipeline 6 and has the valve 6a that pressure-reducing chamber 2 and atmosphere are coupled together.Atmosphere imports pipeline 6 and in post-decompression pressure-reducing chamber 2, imports atmosphere through opening valve 6a, makes the interior pressure in pressure-reducing chamber 2 rise to atmospheric pressure state from vacuum state.In addition, also can make the groove that accumulates of valve 6a and dry air or non-active gas be connected to replace this valve 6a is connected with atmosphere.
The mechanism for filling liquid 4 that is located in the pressure-reducing chamber 2 has aeration tank 44, degassing module 45 and fluid injection nozzle 46.
With reference to Fig. 5, aeration tank 44 through will be exposed to from the electrolyte 20 that supply pump 43 is supplied to pressure-reducing chamber 2 in the pressure-reducing chamber 2 environment down and carry out exhaust from electrolyte 20.Therefore, aeration tank 44 has electrolyte 20 the inflow portion 44b that flow into and the peristome 44a that be formed on the upper end in pressure-reducing chamber 2 of confession from supply pump 43.The electrolyte of supplying with from supply pump 43 20 temporarily accumulates in the aeration tank 44.Thus, the inboard of aeration tank 44 separates into the gas phase of top of liquid phase and liquid level of below of the liquid level of electrolyte 20.Be formed with the 44c of outflow portion that is communicated with degassing module 45 in the position in the face of liquid phase of aeration tank 44.
Flow under the environment in electrolyte 20 in the aeration tank 44 are exposed to the liquid level top that is guided to aeration tank 44 from peristome 44a by the liquid levels in the aeration tank 44 the reservoir 2 from the 44b of inflow portion.Thus, hydraulic pressure is reduced, till the pressure of the environment in the pressure of electrolyte 20 and pressure-reducing chamber 2 equates.In other words, be under the atmospheric situation in pressure-reducing chamber 2, the electrolyte 20 in the aeration tank 44 also becomes atmospheric pressure, is under the situation of negative pressure in pressure-reducing chamber 2, and the electrolyte 20 in the aeration tank 44 also becomes negative pressure.
The capacity of aeration tank 44 is preferably set to and can accumulates the degree that is injected into the electrolyte content in the battery case 12.For example, when being input to battery case 12 in the pressure-reducing chamber 2, all supply with electrolyte 20 to aeration tank 44 from supply pump 43 at every turn.
With reference to Fig. 1, degassing module 45 is connected with the aeration tank 44 interior 44c of outflow portion once more, and for the electrolyte 20 that in aeration tank 44, has carried out the adjustment of exhaust and pressure, further using gases carries out gas-liquid separation through film.
With reference to Fig. 6, a plurality of deaeration pipe 45c that degassing module 45 has the 45a of inlet that is communicated with the 44c of outflow portion of aeration tank 44, the 45b of downstream chamber and the 45a of inlet and the 45b of downstream chamber are coupled together.Degassing module 45 also has the air-tight chamber 45e and the unidirectional valve 45d that is used for the atmosphere gas in air-tight chamber 45e and the pressure-reducing chamber 2 is coupled together that is used to accommodate a plurality of deaeration pipe 45c.Unidirectional valve 45d allows that air flows out to pressure-reducing chamber 2 from air-tight chamber 45e, and stops air 2 to flow into to air-tight chamber 45e from the pressure-reducing chamber.Utilize unidirectional valve 45d with the pressure in the air-tight chamber 45e be held in all the time with pressure-reducing chamber 2 in pressure identical or below the pressure in pressure-reducing chamber 2.In addition, utilizing atmosphere importing pipeline 6 that the pressure in pressure-reducing chamber 2 is risen under the atmospheric situation, air-tight chamber 45e also keeps decompression state.
With reference to Fig. 7, the dissolved gas molecule that size is less and motility is higher that makes the liquid to be contained through the electrolyte that is configured in the deaeration pipe 45c 45b towards the downstream chamber in the air-tight chamber 45e that is depressurized all the time from the 45a of inlet is from the wall diffusion of liquid towards deaeration pipe 45c.The gas molecule of diffusion is paid closely based on the inner peripheral surface that Fick's law (Fick law) focuses on air penetrating film.The above-mentioned gas molecule is absorbed in the air penetrating film based on Henry's law (Henry law), and in air penetrating film, moves and be discharged to outside the air penetrating film.
Once more with reference to Fig. 1, fluid injection nozzle 46 be held the top that the peristome of battery case 12 that instrument 3 remains on the assigned position in pressure-reducing chamber 2 relatively is configured in this peristome.Fluid injection nozzle 46 is connected with the 45b of downstream chamber of degassing module 45 by electromagnetically operated valve 46a.The excitation of fluid injection nozzle 46 response electromagnetically operated valve 46a and electrolyte 20 after the exhaust that will supply with from degassing module 45 be injected into the inboard of battery case 12 from peristome.
Utilization be located at pressure-reducing chamber 2 the outside controller 7 and come running and the switching of the electromagnetically operated valve 46a that fluid injection nozzle 46 is had of the electro-motor 42 of the running to the switching of the valve 5a of reduced pressure line 5 and electro-motor 5c, switching that atmosphere imports the valve 6a of pipeline 6, electrolyte supply pipeline 8 to control by signal circuit.Controller 7 is made up of the microcomputer with central arithmetic unit (CPU), read-only memory (ROM), random-access memory (ram) and input/output interface (I/O interface).Also can constitute controller 7 by many microcomputers.
Then, explanation utilizes electrolyte injection device 1 in battery case 12, to inject the injection technology of electrolyte 20 with reference to Fig. 8 A-Fig. 8 G.
During standby, shown in Fig. 8 G, open the valve 6a that atmosphere imports pipeline 6, be released into atmospheric pressure in the pressure-reducing chamber 2 from moment t0 to moment t1.Shown in Fig. 8 B, open door 21, shown in Fig. 8 E and 8F, the supply pump 43 of electrolyte supply pipeline 8 and the vacuum pump 5b of reduced pressure line 5 are shut down.
At moment t1, begin to utilize the operation of electrolyte injection device 1 fluid injection in battery case 12.Controller 7 through making electrolyte supply pipeline 8 electro-motor 42 runnings and shown in Fig. 8 E that kind make supply pump 43 runnings, the electrolyte 20 that will accumulate in the groove 41 are supplied with to aeration tank 44.
At moment t2, shown in Fig. 8 A, the battery case that remains in maintenance instrument 3 12 is inputed in the pressure-reducing chamber 2 from door 21.At moment t3, shown in Fig. 8 B, closing door 21.
At moment t4, shown in Fig. 8 E, controller 7 stops to supply with electrolyte 20 from electrolyte supply pipeline 8 to aeration tank 44.Through making the electrolyte 20 that is supplied to aeration tank 44 in aeration tank 44, be exposed under the environment in pressure-reducing chamber 2; Make this electrolyte 20 add that from the atmospheric pressure in accumulating groove 41 amount of pressurization of supply pump 43 forms pressurized state and reduces pressure to atmospheric pressure; Its result; Be dissolved in a part of as shown in Figure 5 such expansion of the gas molecule in the electrolyte 20, form bubble and from electrolyte 20 separation.
With reference to Fig. 8 A-Fig. 8 G, at moment t5, shown in Fig. 8 G, controller 7 closed atmosphere import the valve 6a of pipeline 6 once more.Open the valve 5a of reduced pressure line 5 simultaneously, make electro-motor 5c entry into service.Its result, shown in Fig. 8 F, vacuum pump 5b entry into service.Accompany therewith, shown in Fig. 8 C, the pressure in the pressure-reducing chamber 2 is depressurized from atmospheric pressure.
At moment t6, when the pressure in the pressure-reducing chamber 2 was reduced to specified vacuum pressure, controller 7 stopped the running of electro-motor 5c, shown in Fig. 8 F, stopped the running of vacuum pump 5b.In addition, close the valve 5a of reduced pressure line 5.Afterwards, pressure-reducing chamber 2 is held in vacuum pressure.The inside of degassing module 45 and battery case 12 also is maintained in vacuum pressure.
Through in aeration tank 44, electrolyte 20 being exposed under the vacuum pressure, further electrolyte 20 is reduced pressure.Its result, the density of the dissolved gas molecule that electrolyte 20 is contained reduces, and becomes the state mobile in liquid that is easy to.In this environment, make the volumetric expansion of gas molecule and become bubble, promptly in liquid, rise and arrive the liquid level of electrolyte 20, and be released to the upper space of aeration tank 44.Like this, through being reduced pressure in pressure-reducing chamber 2, promote the gas-liquid separation of the electrolyte 20 in the aeration tank 44.
At moment t6, controller 7 is opened electromagnetically operated valve 46a in the running that stops vacuum pump 5b, shown in Fig. 8 D, begins in battery case 12, to inject electrolyte 20 from fluid injection nozzle 46.Along with fluid injection nozzle 46 begins to inject electrolyte 20, the aeration tank 44 interior electrolyte 20 of having emitted the dissolved gas molecule fully are supplied to fluid injection nozzle 46 via degassing module 45.Through making electrolyte 20, further make the dissolved gas molecular separation that remains in the liquid through degassing module 45.Thereby, electrolyte 20 is supplied to fluid injection nozzle 46 with the state of almost completely having removed gas molecule.
In the space between both sides 12c, 12d and the battery main body 11 about being injected into electrolyte 20 in the battery case 12 and at first flowing into, and then be filled to the gap between the base 12b of battery main body 11 and battery case 12 from the space of the top of battery main body shown in Figure 4 11.Like this, be injected into the inside that electrolyte 20 in the battery case 12 infiltrates into battery main body 11 around the battery main body 11.
The electrolyte 20 that is injected in the battery case 12 has almost completely been removed gas molecule.In addition, in aeration tank 44, the pressure of electrolyte 20 is adjusted to the vacuum pressure in pressure-reducing chamber 2 in advance and equates.
Thereby in the electrolyte 20 in being injected into battery case 12, the dissolved gas molecule that is present in the liquid expands sharp, can not produce to cause the liquid this unfavorable condition of dispersing, and electrolyte 20 promptly infiltrates into the inside of battery main body 11.
At moment t7, shown in Fig. 8 D, the amount of the electrolyte 20 in the battery case 12 reaches ormal weight.Be injected in the battery case 12 through the electrolyte 20 that will reduce pressure; And removed the dissolved gas molecule in the electrolyte 20 in advance; During can shortening from moment t6 to moment t7; This moment t6 is the moment of injecting beginning electrolyte 20 by fluid injection nozzle 46, and this moment t7 is the moment that is stopped to inject electrolyte 20 by fluid injection nozzle 46.
At moment t7, controller 7 cuts out electromagnetically operated valve 46a, and shown in Fig. 8 G, opens the valve 6a that atmosphere imports pipeline 6, begins to import atmosphere to pressure-reducing chamber 2.
Its result, shown in Fig. 8 C, the pressure in the pressure-reducing chamber 2 rises to atmospheric pressure.Even the pressure in the pressure-reducing chamber 2 rises, the pressure inside of the battery main body 11 in the battery case 12 can not rise immediately yet.This barometric gradient makes electrolyte 20 quicken to accomplish the operation to battery main body 11 filling electrolytes 20 at short notice to battery main body 11 internal penetrations.
At moment t8, when the pressure in the pressure-reducing chamber 2 arrives atmospheric pressure, shown in Fig. 8 B, open door 21.At moment t9, shown in Fig. 8 A, battery case 12 is being exported outside pressure-reducing chamber 2 from door 21 under the state that remains in maintenance instrument 3.Afterwards, in pressure-reducing chamber 2, begin in other battery case 12, to inject the technology of electrolyte 20 once more.
Through to the peristome of battery case 12 of 2 outputs carries out thermal welding and seals this battery case 12 from the pressure-reducing chamber, be assembled into lithium rechargeable battery thereby accomplish.
As stated, adopt this electrolyte injection device 1, aeration tank 44 is exposed to electrolyte 20 under the environment in the pressure-reducing chamber 2, thereby electrolyte 20 is reduced pressure.Its result, the density of the dissolved gas molecule in the electrolyte 20 reduce and become the state that in liquid, moves of being easy to.The volumetric expansion of gas molecule and become bubble is risen rapidly in liquid and is arrived the liquid level of electrolyte 20, and is discharged to the upper space of aeration tank 44.Like this,, promoted the gas-liquid separation of electrolyte 20, improved degassing efficiency through being provided for that electrolyte 20 is exposed to the aeration tank 44 under the environment in pressure-reducing chamber 2.Its result can shorten time of fluid injection in battery case 12.
In addition, through making up, can expect fully electrolyte 20 to be outgased with the degassing module of having used air penetrating film 45.
Its result; When in battery case 12, injecting electrolyte 20 from fluid injection nozzle 46; The volume that can prevent to remain in the gas in the electrolyte 20 expand sharp and cause liquid disperse, or the bubble that is produced make electrolyte overflow such unfavorable condition from battery case, can improve the efficient of injection electrolyte 20 to battery case 12 in.
In above illustrated example; Through in advance the electrolyte 20 of ormal weight being accumulated in the aeration tank 44 in the pressure-reducing chamber 2; And the electrolyte 20 that will accumulate in the aeration tank 44 are exposed under the environment in the pressure-reducing chamber 2 in the decompression, and the gas molecules that are dissolved in the electrolyte 20 are separated.For this situation, also can, aeration tank 44 utilize fluid injection nozzle 46 in battery case 12, to inject electrolyte 20 when supplying with electrolyte 20 from supply pump 43.
In this case, make supply pump 43 runnings, begin to supply with electrolyte 20 to aeration tank 44 from accumulating groove 41 at the moment t4 of the door 21 of closing pressure-reducing chamber 2 or the moment t5 that begins to reduce pressure.Shown in the dotted line A of Fig. 8 E, supply with electrolyte 20 from accumulating groove 41 to aeration tank 44 constantly with the flow that the reservoir quantity of fluid injection nozzle 46 is roughly synchronous, till accomplishing fluid injection by fluid injection nozzle 46.
Being in has increased electrolyte 20 under the pressurized state that the supply that provided by supply pump 43 presses owing to being depressurized under the reduced pressure atmosphere that in aeration tank 44, is exposed to pressure-reducing chamber 2 to accumulating atmospheric pressure in the groove 41; Accompany therewith, dissolved gas molecule in the electrolyte 20 expands and forms bubble and separated.Thereby the separation for the survival gas molecule in the electrolyte 20 can obtain the desirable effect identical with above illustrated example.
With reference to Fig. 9 other embodiment of the present invention is described.
The electrolyte injection device 1 of this embodiment has 1 group of aeration tank 44, degassing module 45 and is connected side by side with this degassing module 45 in pressure-reducing chamber 2 a plurality of fluid injection nozzles 46.Maintenance instrument 30 will keep with overlapping in the horizontal direction state with the battery case 12 of fluid injection nozzle 46 equal numbers.Above-mentioned equipment all is housed in the inboard in pressure-reducing chamber shown in Figure 12.The structure in the outside in pressure-reducing chamber 2 is identical with the 1st embodiment.
Like this,, can inject electrolyte 20 to a plurality of battery cases 12 simultaneously in pressure-reducing chamber 2, further improve operating efficiency through a plurality of fluid injection nozzles 46 are set.Also can a plurality of maintenance instruments identical with the 1st execution mode 3 be arranged and replace maintenance instrument 30.And, also can use the single fluid injection nozzle 46 identical to inject electrolyte 20 to a plurality of battery cases 12 successively with the 1st execution mode.
About above explanation, quote to be that Japan of the applying date is special on April 7th, 2010 and be willing to that 2010-88696 number content incorporates in this specification.
More than, through several certain embodiments the present invention has been described, but the present invention is not limited to each above-mentioned embodiment.To those skilled in the art, can in the protection range of claims, apply various modifications or change to the above embodiments.
For example; More than each embodiment of explanation is the embodiment that applies the present invention to lithium rechargeable battery is injected the electrolyte injection device of electrolyte, but the present invention also can be applied to double electric layer capacitor, electrolytic capacitor are injected the electrolyte injection device of electrolyte.
In addition, aeration tank 44 is not that certain needs are configured in the pressure-reducing chamber 2.Peristome 44a through making aeration tank 44 is communicated with pressure-reducing chamber 2 via pipe arrangement, also can aeration tank 44 be configured in the outside in pressure-reducing chamber 2.
Utilizability on the industry
As stated, because the present invention has brought desirable effect for improving the operating efficiency that in battery case, injects electrolyte, therefore can be applied to the manufacturing of various batteries.
Exclusive character that inventive embodiment comprised or characteristics such as claims are said.
Claims (7)
1. electrolyte injection device, it is used in battery case, injecting electrolyte, wherein,
This electrolyte injection device comprises:
Airtight pressure-reducing chamber;
The fluid injection nozzle, its battery case that is used in being configured in the pressure-reducing chamber injects electrolyte;
Aeration tank, it is used to make the electrolyte of wanting to be supplied to the fluid injection nozzle to be exposed under the pressure in the pressure-reducing chamber.
2. electrolyte injection device according to claim 1, wherein,
This electrolyte injection device also has using gases and sees through the degassing module that film separates gas-liquid, and this degassing module is between aeration tank and fluid injection nozzle.
3. electrolyte injection device according to claim 2, wherein,
Aeration tank comprises: inflow portion, and it is used to make electrolyte to flow into; Peristome, it forms with the mode in the face of the gas phase of the top of the liquid level of electrolyte, is communicated with atmosphere gas in the pressure-reducing chamber; Outflow portion, it forms with the mode in the face of the liquid phase of electrolyte, is communicated with degassing module.
4. electrolyte injection device according to claim 3, wherein,
This electrolyte injection device is configured in aeration tank in the pressure-reducing chamber, and have the outside that is configured in the pressure-reducing chamber, be used for the supply pump of electrolyte supply to inflow portion.
5. according to each described electrolyte injection device in the claim 1～4, wherein,
The pressure-reducing chamber has the door that is used for the I/O battery case.
6. according to each described electrolyte injection device in the claim 1～5, wherein,
This electrolyte injection device has a plurality of fluid injection nozzles.
7. electrolyte method for implanting, it is used in battery case, injecting electrolyte, wherein,
The sealing pressure-reducing chamber,
In aeration tank, electrolyte is exposed under the pressure in the pressure-reducing chamber,
Utilize the fluid injection nozzle that the electrolyte in the aeration tank is injected in the battery case that is configured in the pressure-reducing chamber.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-088696 | 2010-04-07 | ||
| JP2010088696A JP5585174B2 (en) | 2010-04-07 | 2010-04-07 | Electrolyte injection method and electrolyte injection device |
| PCT/JP2011/058784 WO2011126068A1 (en) | 2010-04-07 | 2011-04-07 | Electrolyte pouring device and electrolyte pouring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102834951A true CN102834951A (en) | 2012-12-19 |
| CN102834951B CN102834951B (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180017444.0A Active CN102834951B (en) | 2010-04-07 | 2011-04-07 | Electrolyte pouring device and electrolyte pouring method |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US9065131B2 (en) |
| EP (1) | EP2557616B1 (en) |
| JP (1) | JP5585174B2 (en) |
| KR (1) | KR101410562B1 (en) |
| CN (1) | CN102834951B (en) |
| BR (1) | BR112012025762A2 (en) |
| MX (1) | MX2012011544A (en) |
| RU (1) | RU2534013C2 (en) |
| WO (1) | WO2011126068A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP5585174B2 (en) | 2014-09-10 |
| US20130029186A1 (en) | 2013-01-31 |
| KR20130006683A (en) | 2013-01-17 |
| US9065131B2 (en) | 2015-06-23 |
| EP2557616B1 (en) | 2014-04-02 |
| KR101410562B1 (en) | 2014-06-23 |
| JP2011222221A (en) | 2011-11-04 |
| CN102834951B (en) | 2015-07-08 |
| EP2557616A4 (en) | 2013-11-13 |
| RU2012147274A (en) | 2014-05-20 |
| MX2012011544A (en) | 2012-11-16 |
| RU2534013C2 (en) | 2014-11-27 |
| WO2011126068A1 (en) | 2011-10-13 |
| EP2557616A1 (en) | 2013-02-13 |
| BR112012025762A2 (en) | 2016-06-28 |
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